NEW YORK -- Jack White will be the last-minute replacement musical guest on “Saturday Night Live” after country singer Morgan Wallen was dropped for breaking COVID-19 protocols.Wallen was removed as musical guest on Thursday after TikTok videos showed him partying last weekend without a mask on among a large group of people. Lorne Michaels announced White as a fill-in Friday on the “Today” show.“Calling somebody on a Thursday to be here for Friday, it’s complicated," said Michaels.